If you're riding your bike at night, a good light is an absolute must. We've shown you a couple ways to make your own, but if you already have one, a clothes peg works great as a mount.
Granted, most of these lights come with a mount, but if yours breaks, or just doesn't work well with part of your bike, this is a great alternative to going out and buying a new light. All you have to do is attach the light to a wooden clothes peg with two cable ties and clip it to your bike. Bike Hacks demos the process by sticking it on a luggage rack on the back of a bike, but the placement will obviously vary from model to model.
The upshot of this hack is that you can transfer the light easily between multiple bikes as necessary, making this great for sharing. Be sure to check out the source link for the walkthrough.
Clothespin Bike Light Hack [Bike Hacks]